Sets the value for the variable from a string. For 1D arrays, the specification is of the form '1,2,3'. For nD arrays, the specification is of the form 'bounds[2,2,2] {1,2,3,4,5,6,7,8}'. String arrays may optionally have the elements quoted in the form 'bounds[2,3] {"a", "b,c", "d", "", "e", "f"}'